Edison Liu holds the Megalonia championship title during the sequel series. He catapulted to fame five years prior by defeating former champion "Gearless" Joe in an exhibition match, a victory contributing to Joe's disappearance from the pro circuit and descent into addiction and underground fighting. This pivotal win crowned Liu as Megaloboxing's new icon.

Trained by Yuri, the former champion Joe defeated in the first Megalonia tournament, Liu embodies the next generation of elite fighters. His fighting style and philosophy, reflecting Yuri's influence, prioritize professionalism and unwavering dedication to the sport. Liu enters matches focused solely on pure competition, not personal vendettas.

During his title defense against Mac Rosario, Liu sustains a significant injury triggered by Mac's uncontrollable "Mac Time" state. Despite the injury's severity and potential career impact, Liu accepts the outcome without casting blame. He demonstrates resilience by immediately dedicating himself to rehabilitation and recovery.

Liu maintains a professional respect for Joe, acknowledging his skills even after defeating him. Their exchanges remain devoid of personal animosity, casting Liu as a rival defined by athletic integrity. His role contrasts Joe's journey, representing the sport's current pinnacle while Joe struggles outside its bounds.